Multiple choice. Choose the correct answer.
{"name":"Multiple choice. Choose the correct answer.", "url":"https://www.quiz-maker.com/QWMVYXLGK","txt":"The English mathematician professor and a father of computer, It is also called a counting frame, is a calculating tool that was in use in the Chinese people., also called a counting frame, is a calculating tool that was in use in the Chinese people in addition.","img":"https://www.quiz-maker.com/3012/images/ogquiz.png"}